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Patent Searching and Data


Title:
CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2019/155779
Kind Code:
A1
Abstract:
Provided is a control valve for a variable displacement compressor, with which the effects of refrigerant pressure on a main valve body can be effectively canceled out, and it is possible to avoid structural complications and size increases in physical constitution. A pressure-equalizing passage 15 is provided for guiding pressure Pc of a crank chamber exerted on a lower end of a main valve body 10 to a pressure-sensitive chamber 45, and causing the pressure Pc of the crank chamber to be exerted on an upper end of the main valve body 10, and when current conduction to (a solenoid part 30A of) an electromagnetic actuator 30 has been turned off (when a valve port 22 is fully open), intake pressure Ps is prevented from being guided into the pressure-sensitive chamber 45 from a Ps inlet/outlet 27 (a Ps in/out chamber 28), the pressure Pc of the crank chamber is guided into the pressure-sensitive chamber 45 via the pressure-equalizing passage 15, and the pressure Pc of the crank chamber is exerted on both the upper and lower ends of the main valve body 10.

More Like This:
WO/2000/053927PISTON COMPRESSOR
WO/2010/031533COOLANT COMPRESSOR
Inventors:
ITOH Masaharu (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
SAKAMOTO Takashi (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
TANO Shintaro (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
SHIMADA Kenki (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
Application Number:
JP2018/047969
Publication Date:
August 15, 2019
Filing Date:
December 26, 2018
Export Citation:
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Assignee:
FUJIKOKI CORPORATION (17-24, Todoroki 7-chome Setagaya-k, Tokyo 82, 〒1580082, JP)
International Classes:
F04B27/18; F16K31/06
Foreign References:
JP2012211579A2012-11-01
JP4550651B22010-09-22
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (Atago Green Hills MORI Tower 32F, 5-1 Atago 2-chome, Minato-k, Tokyo 32, 〒1056232, JP)
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